High sensitivity spectroscopy of molecules adsorbed on oxide surfaces using enhancement effect of defect states

2011 Fiscal Year Final Research Report

• Project/Area Number: 22655004
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Physical chemistry
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: ONDA Ken 東京工業大学, 大学院・総合理工学研究科, 特任准教授 (60272712)
• Project Period (FY): 2010 – 2011
• Keywords: 表面・界面 / 酸化物 / 表面分光 / 非線形分光

Research Abstract

Aiming at developing high sensitivity spectroscopy of molecules adsorbed on oxide surfaces, vibrational sum frequency generation(VSFG) spectra on various oxide surfaces were measured. We discovered extraordinary strong signal located at 1600cm-1, which is three orders of magnitude stronger than ordinal signals, on a TiO2single crystal surface in air. In order to reveal the origin of this strong signal, we measured VSFG spectra of various molecules on various modified surfaces. The results implied that the enhancement effect is attributed to the resonance effect to the mixing state between surface water and defect states of the oxide surface.

Research Products

• [Journal Article] Charge and structural dynamics in photoinduced phase transition of(EDO-TTF)_2PF_6examined by picosecond time-resolved vibrational spectroscopy (2012)
  • Author(s): Naoto Fukazawa, Minoru Shimizu, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takaaki Hiramatsu, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, and Ken Onda
  • Journal Title: J. Phys. Chem. C Volume: 116 Pages: 5892-5899
  • Peer Reviewed
• [Journal Article] Photoinduced Ionic to Neutral Phase Transition in TTF-CA Studied by Time-resolved Infrared Vibrational Spectroscopy (2012)
  • Author(s): Yoshitaka Matsubara, Tatsushi Yoshida, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, and Ken Onda
  • Journal Title: Acta Physica Polonica A Volume: 121 Pages: 340-342
  • Peer Reviewed
• [Journal Article] Photo-induced Structural Changes at a Surface of Organic Single Crystals Observed by Vibrational Sum Frequency Generation Spectroscopy (2012)
  • Author(s): K. Fukumoto, S. Koshihara, N. Fukazawa, T. Ishikawa, H. Yamamoto, R. Kato, and K. Onda
  • Journal Title: Acta Physica Polonica A Volume: 121 Pages: 313-315
  • Peer Reviewed
• [Journal Article] Photoinduced Neutral-to-Ionic Phase Transition in Tetrathiafulvalene-p-Chloranil Studied by Time-resolved Vibrational Spectroscopy (2011)
  • Author(s): Yoshitaka Matsubara, Yoichi Okimoto, Tatsushi Yoshida, Tadahiko Ishikawa, Shin-ya Koshihara, and Ken Onda
  • Journal Title: J. Phys. Soc. Jpn Volume: 80 Pages: 124711-1-5
  • Peer Reviewed
• [Journal Article] Ultrafast Spectral Weight Transfer in RBaCo2O6.δ(R=Sm, Gd, and Tb): A Role of Electronic Correlation in Photoinduced Phase Transition (2011)
  • Author(s): Y. Okimoto, T. Miyata, M. S. Endo, M. Kurashima, K. Onda, T. Ishikawa, S. Koshihara1, M. Lorenc, E. Collet, H. Cailleau, and T. Arima
  • Journal Title: Phys. Rev. B Volume: 84 Pages: 121102
  • Peer Reviewed
• [Journal Article] Acceleration of domain wall movement by photoirradiation in perovskite-type cobaltite (2011)
  • Author(s): Y. Okimoto, M. Kurashima, K. Seko, T. Ishikawa, K. Onda, S. Koshihara, T. Kyomen, and M. Itoh
  • Journal Title: Phys. Rev. B Volume: 83 Pages: 161101(R)
  • Peer Reviewed
• [Journal Article] Photoinduced Dynamics of a Quasi-1DOrganic Conductor over a Range from 10 fsto 100 ps (2011)
  • Author(s): Ken Onda, Sho Ogihara, Jiro Itatani, Tadahiko Ishikawa, Yoichi Okimoto, Shinya Koshihara, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, and Gunzi Saito
  • Journal Title: Ultrafast Phenomena XVII Pages: 188-190
  • Peer Reviewed
• [Journal Article] Light-driven modulation of fluorescence color from azobenzene derivatives containing electron-donating and electron-withdrawing groups (2010)
  • Author(s): Mina Han, Yasuo Norikane, Ken Onda, Yoko Matsuzawa, Masaru Yoshida, and Masahiko Hara
  • Journal Title: New J. Chem Volume: 34 Pages: 2892-2896
  • Peer Reviewed
• [Journal Article] Ultrafast and large reflectivity change by ultraviolet excitation of the metallic phase in the organic conductor(EDO-TTF)_2PF_6 (2010)
  • Author(s): K. Onda, M. Shimizu, F. Sakaguchi, S. Ogihara, T. Ishikawa, Y. Okimoto, S. Koshihara, X. F. Shao, Y. Nakano, H. Yamochi, and G. Saito
  • Journal Title: Physica B Volume: 405 Pages: S350
  • Peer Reviewed
• [Presentation] 非線形分光法を用いた酸化物表面吸着種の反応ダイナミクス (2012)
  • Author(s): 恩田健
  • Organizer: 第72回表面科学研究会「和周波発生分光法による表面・界面計測」(招待講演)
  • Place of Presentation: 東京理科大、東京都
  • Year and Date: 2012-03-19
• [Presentation] 非線形振動分光法の光触媒、有機電子デバイスへの応用 (2012)
  • Author(s): 恩田健
  • Organizer: 第5回SFG研究会(招待講演)
  • Place of Presentation: 東北大学、宮城県
  • Year and Date: 2012-03-10
• [Presentation] ピコ秒VSFG法による単結晶二酸化チタン表面の大気中での観測 (2010)
  • Author(s): 恩田健
  • Organizer: 表面・界面スペクトロスコピー2010
  • Place of Presentation: つくば市筑波山京成ホテル
  • Year and Date: 2010-12-04
• [Presentation] Dynamics in air of monolayer water on a single crystal TiO2(110) surface using picosecond VSFG spectroscopy (2010)
  • Author(s): K. Onda
  • Organizer: 平成22年度日本分光学会年次講演
  • Place of Presentation: 京都市京都大学
  • Year and Date: 2010-11-18
• [Presentation] Dynamics of Monolayer Water ona Single Crystalline TiO2 Surface in Airby VSFG Spectroscopy (2010)
  • Author(s): K. Onda
  • Organizer: 7th International Symposium on Ultrafast Surface Dynamics
  • Place of Presentation: クロアチアBrijuni Islands
  • Year and Date: 2010-08-26
• [Remarks]
  • URL: http://www.cms.titech.ac.jp/~koshihara/member/onda/